<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="./hello3", method="post">
        <input type="hidden", name="username", value="1">
        <input type="hidden", name="password", value="2">
        <input type="submit" value="跳转">
    </form>
</body>
</html>